local f=assert(io.open(arg[1],'rb') ) 
local block=10
while true
do
local bytes=f:read(block) 
if(not bytes) then
break

end
for b in string.gfind(bytes,'.') do
io.write(string.format('%02X',string.byte(b) ) ) 
end
io.write(string.rep('',((block-string.len(bytes) )+1)) ) io.write(string.gsub(bytes,'%c','.') ,'') 
end
